/* Reset & Global Base Styles */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-body);
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

#app {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  width: 100%;
}

main {
  flex: 1;
}

/* Headings Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-white);
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.5rem, 5vw, 4.2rem); }
h2 { font-size: clamp(2rem, 3.5vw, 2.75rem); }
h3 { font-size: clamp(1.35rem, 2vw, 1.75rem); }
h4 { font-size: clamp(1.1rem, 1.5vw, 1.35rem); }

p {
  color: var(--text-muted);
  font-size: 1.05rem;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button, input, textarea, select {
  font: inherit;
}

/* Layout Utilities */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.section-padding {
  padding-top: 6rem;
  padding-bottom: 6rem;
}

@media (max-width: 768px) {
  .section-padding {
    padding-top: 4rem;
    padding-bottom: 4rem;
  }
}

/* Scrollbar Customization */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-dark);
}
::-webkit-scrollbar-thumb {
  background: #262936;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--purple-primary);
}

/* Utilities */
.text-purple { color: var(--purple-light); }
.text-gradient {
  background: var(--purple-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.bg-purple-subtle { background-color: var(--purple-subtle); }
.border-purple { border-color: var(--border-active); }

/* Animation Utility */
.fade-in {
  animation: fadeIn 0.4s ease-out forwards;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}